How do you enable Xcode predictive code completion?

To enable predictive code completion in Xcode, you can follow these steps:

1. Start Typing: As you begin typing your code, Xcode will automatically provide suggestions based on the surrounding code context, including function names and comments.
2. Accept Suggestions: You can press the Tab key to accept the suggested code completion. If you want to expand the entire prediction, hold the Option key and then press Tab to accept the whole suggestion.
3. Use Comments and Variable Names: The more expressive you are with your comments and variable names, the better the predictions will be, as Xcode uses these to inform its suggestions.

For a detailed demonstration, you can refer to the Platforms State of the Union session at the 22:18 mark.

Relevant Sessions

• Platforms State of the Union
• Xcode essentials
• What’s new in Xcode 16